1987/01/01	0.90
1987/01/02	0.80
1987/01/03	0.70
1987/01/04	0.60
1987/01/05	0.60
1987/01/06	0.60
1987/01/07	0.50
1987/01/08	0.50
1987/01/09	0.50
1987/01/10	0.50
1987/01/11	0.50
1987/01/12	0.50
1987/01/13	0.40
1987/01/14	0.40
1987/01/15	0.40
1987/01/16	0.40
1987/01/17	0.40
1987/01/18	0.40
1987/01/19	0.40
1987/01/20	0.40
1987/01/21	0.40
1987/01/22	0.40
1987/01/23	0.40
1987/01/24	0.40
1987/01/25	0.40
1987/01/26	0.40
1987/01/27	0.40
1987/01/28	0.40
1987/01/29	0.40
1987/01/30	0.40
1987/01/31	0.40
1987/02/01	0.40
1987/02/02	0.40
1987/02/03	0.40
1987/02/04	0.40
1987/02/05	0.40
1987/02/06	0.40
1987/02/07	0.40
1987/02/08	0.40
1987/02/09	0.40
1987/02/10	0.40
1987/02/11	0.40
1987/02/12	0.40
1987/02/13	0.40
1987/02/14	0.40
1987/02/15	0.40
1987/02/16	0.40
1987/02/17	0.40
1987/02/18	0.40
1987/02/19	0.40
1987/02/20	0.40
1987/02/21	0.40
1987/02/22	0.60
1987/02/23	0.60
1987/02/24	0.60
1987/02/25	0.60
1987/02/26	0.60
1987/02/27	0.60
1987/02/28	0.50
1987/03/01	0.50
1987/03/02	0.50
1987/03/03	0.50
1987/03/04	0.60
1987/03/05	0.60
1987/03/06	0.60
1987/03/07	0.60
1987/03/08	0.60
1987/03/09	0.60
1987/03/10	0.60
1987/03/11	0.60
1987/03/12	0.60
1987/03/13	0.50
1987/03/14	0.50
1987/03/15	0.50
1987/03/16	0.50
1987/03/17	0.50
1987/03/18	0.50
1987/03/19	0.50
1987/03/20	0.50
1987/03/21	0.50
1987/03/22	0.50
1987/03/23	0.50
1987/03/24	0.50
1987/03/25	0.50
1987/03/26	0.50
1987/03/27	0.50
1987/03/28	0.50
1987/03/29	0.50
1987/03/30	0.50
1987/03/31	0.50
1987/04/01	0.50
1987/04/02	0.50
1987/04/03	0.50
1987/04/04	0.40
1987/04/05	0.40
1987/04/06	0.40
1987/04/07	0.40
1987/04/08	0.50
1987/04/09	0.50
1987/04/10	0.40
1987/04/11	0.40
1987/04/12	0.40
1987/04/13	0.40
1987/04/14	0.40
1987/04/15	0.40
1987/04/16	0.40
1987/04/17	0.40
1987/04/18	0.40
1987/04/19	0.40
1987/04/20	0.40
1987/04/21	0.60
1987/04/22	0.70
1987/04/23	0.40
1987/04/24	0.40
1987/04/25	0.30
1987/04/26	0.30
1987/04/27	0.20
1987/04/28	0.20
1987/04/29	0.20
1987/04/30	0.50
1987/05/01	0.40
1987/05/02	0.30
1987/05/03	0.30
1987/05/04	0.30
1987/05/05	1.20
1987/05/06	1.40
1987/05/07	0.80
1987/05/08	0.50
1987/05/09	0.30
1987/05/10	0.40
1987/05/11	0.40
1987/05/12	0.50
1987/05/13	0.60
1987/05/14	0.60
1987/05/15	0.50
1987/05/16	0.40
1987/05/17	0.30
1987/05/18	0.20
1987/05/19	0.70
1987/05/20	0.60
1987/05/21	0.40
1987/05/22	0.30
1987/05/23	0.30
1987/05/24	0.20
1987/05/25	0.20
1987/05/26	0.20
1987/05/27	0.20
1987/05/28	0.20
1987/05/29	0.20
1987/05/30	0.20
1987/05/31	0.30
1987/06/01	0.40
1987/06/02	1.90
1987/06/03	2.72
1987/06/04	1.70
1987/06/05	1.10
1987/06/06	0.80
1987/06/07	0.40
1987/06/08	0.40
1987/06/09	2.54
1987/06/10	1.80
1987/06/11	1.80
1987/06/12	1.10
1987/06/13	0.90
1987/06/14	1.00
1987/06/15	1.00
1987/06/16	1.60
1987/06/17	1.80
1987/06/18	1.80
1987/06/19	1.40
1987/06/20	1.30
1987/06/21	1.30
1987/06/22	1.20
1987/06/23	1.10
1987/06/24	1.10
1987/06/25	0.90
1987/06/26	0.90
1987/06/27	0.90
1987/06/28	0.80
1987/06/29	47.82
1987/06/30	5.30
1987/07/01	2.90
1987/07/02	1.90
1987/07/03	1.50
1987/07/04	1.30
1987/07/05	1.30
1987/07/06	3.26
1987/07/07	2.36
1987/07/08	2.36
1987/07/09	2.18
1987/07/10	1.90
1987/07/11	1.80
1987/07/12	1.70
1987/07/13	1.60
1987/07/14	1.50
1987/07/15	1.90
1987/07/16	1.70
1987/07/17	4.70
1987/07/18	2.00
1987/07/19	1.60
1987/07/20	1.80
1987/07/21	3.44
1987/07/22	1.80
1987/07/23	1.50
1987/07/24	3.26
1987/07/25	3.80
1987/07/26	3.44
1987/07/27	3.26
1987/07/28	2.54
1987/07/29	2.00
1987/07/30	1.90
1987/07/31	3.80
1987/08/01	5.30
1987/08/02	4.70
1987/08/03	4.40
1987/08/04	4.70
1987/08/05	3.62
1987/08/06	3.26
1987/08/07	3.26
1987/08/08	3.26
1987/08/09	4.40
1987/08/10	3.44
1987/08/11	3.08
1987/08/12	2.90
1987/08/13	2.72
1987/08/14	2.54
1987/08/15	2.54
1987/08/16	2.54
1987/08/17	2.72
1987/08/18	11.12
1987/08/19	5.30
1987/08/20	3.62
1987/08/21	3.44
1987/08/22	30.10
1987/08/23	83.37
1987/08/24	77.64
1987/08/25	35.85
1987/08/26	18.50
1987/08/27	12.29
1987/08/28	11.60
1987/08/29	9.68
1987/08/30	7.76
1987/08/31	5.90
1987/09/01	16.43
1987/09/02	18.50
1987/09/03	12.29
1987/09/04	31.25
1987/09/05	14.36
1987/09/06	9.68
1987/09/07	8.24
1987/09/08	18.50
1987/09/09	11.60
1987/09/10	9.68
1987/09/11	8.24
1987/09/12	6.50
1987/09/13	6.20
1987/09/14	6.20
1987/09/15	5.90
1987/09/16	5.30
1987/09/17	5.00
1987/09/18	5.60
1987/09/19	5.30
1987/09/20	6.20
1987/09/21	5.90
1987/09/22	5.60
1987/09/23	4.70
1987/09/24	4.70
1987/09/25	4.70
1987/09/26	5.00
1987/09/27	5.00
1987/09/28	4.70
1987/09/29	4.40
1987/09/30	4.40
1987/10/01	4.10
1987/10/02	4.10
1987/10/03	4.40
1987/10/04	4.40
1987/10/05	4.40
1987/10/06	4.40
1987/10/07	4.40
1987/10/08	9.68
1987/10/09	5.30
1987/10/10	4.70
1987/10/11	4.70
1987/10/12	4.40
1987/10/13	4.10
1987/10/14	4.10
1987/10/15	5.60
1987/10/16	5.90
1987/10/17	5.00
1987/10/18	4.70
1987/10/19	4.40
1987/10/20	4.40
1987/10/21	4.40
1987/10/22	4.40
1987/10/23	4.40
1987/10/24	4.40
1987/10/25	4.40
1987/10/26	4.10
1987/10/27	3.80
1987/10/28	3.80
1987/10/29	3.62
1987/10/30	3.62
1987/10/31	3.44
1987/11/01	3.26
1987/11/02	3.44
1987/11/03	3.62
1987/11/04	4.40
1987/11/05	3.44
1987/11/06	3.44
1987/11/07	3.44
1987/11/08	3.44
1987/11/09	3.44
1987/11/10	3.26
1987/11/11	3.08
1987/11/12	3.08
1987/11/13	2.90
1987/11/14	2.90
1987/11/15	2.72
1987/11/16	2.72
1987/11/17	2.72
1987/11/18	2.72
1987/11/19	2.90
1987/11/20	2.72
1987/11/21	2.54
1987/11/22	2.54
1987/11/23	2.36
1987/11/24	2.18
1987/11/25	2.18
1987/11/26	2.00
1987/11/27	2.00
1987/11/28	2.00
1987/11/29	2.00
1987/11/30	1.90
1987/12/01	1.90
1987/12/02	1.90
1987/12/03	1.90
1987/12/04	1.80
1987/12/05	1.80
1987/12/06	1.70
1987/12/07	1.70
1987/12/08	1.60
1987/12/09	1.60
1987/12/10	1.60
1987/12/11	1.60
1987/12/12	1.60
1987/12/13	1.60
1987/12/14	1.60
1987/12/15	1.50
1987/12/16	1.50
1987/12/17	1.50
1987/12/18	1.50
1987/12/19	1.50
1987/12/20	1.40
1987/12/21	1.40
1987/12/22	1.40
1987/12/23	1.30
1987/12/24	1.30
1987/12/25	1.30
1987/12/26	1.30
1987/12/27	1.30
1987/12/28	1.30
1987/12/29	1.30
1987/12/30	1.30
1987/12/31	1.30
#===========================================
# Number of observations = 365 / 365
# Average = 3.12